Widget:Test

   <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
   <script type="text/javascript">
     google.charts.load('current', {'packages':['timeline']});
     google.charts.setOnLoadCallback(drawChart);
     function drawChart() {
       var container = document.getElementById('timeline');
       var chart = new google.visualization.Timeline(container);
       var dataTable = new google.visualization.DataTable();

       dataTable.addColumn({ type: 'string', id: 'President' });
       dataTable.addColumn({ type: 'date', id: 'Start' });
       dataTable.addColumn({ type: 'date', id: 'End' });
       dataTable.addRows([
         [ 'Washington', new Date(1789, 3, 30), new Date(1797, 2, 4) ],
         [ 'Adams',      new Date(1797, 2, 4),  new Date(1801, 2, 4) ],
         [ 'Jefferson',  new Date(1801, 2, 4),  new Date(1809, 2, 4) ]]);

       chart.draw(dataTable);
     }
   </script>